I have one with a Bristlenose, Sailfin, Whiptail, and a Clown. His name is Houndini, I'll go for 2 or 3 weeks and never see him and one day he'll pop up within a few minutes he's gone.
On a side not, Rubberlips are the only Plecos my Gar's ever mess with. They killed the first one I had in their which is my fault I believe... I released him the same time I released some feeders but this second one I've seen in my Spotted's mouth luckily there made of steel.